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Reciprocating pump apparatus and method using sameRelated Patent Categories: Pumps, Motor Driven, Electric Or Magnetic Motor, Reciprocating Rigid Pumping Member, Reciprocating MotorReciprocating pump apparatus and method using same description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060210410, Reciprocating pump apparatus and method using same. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS REFERENCE TO RELATED APPLICATIONS [0001] This Application claims priority from a U.S. Provisional Application having Ser. No. 60/662,023 filed Mar. 15, 2005. FIELD OF THE INVENTION [0002] The invention is directed to a reciprocating pump comprising one or more magnetic pistons slidingly disposed therein, and a method using same. BACKGROUND OF THE INVENTION [0003] Most common pumps have one aspect that unify them, they are mechanically complex. This complexity creates drawbacks, first in the construction of the pump and second, in its maintenance. Pumps are normally divided into two sections, the mechanical motion source and actual pump that moves the fluid. The motion source may comprise one or more motors, alternating current (AC) or direct current (DC), or a variety of similar engines. Such pumps are costly to manufacture, and have a limited life span. The pump portion is also mechanically complex with numerous parts that eventually wear out, thereby making access to the pump and frequent maintenance essential. As the number of moving parts increases, so does the maintenance burden. [0004] Referring now to FIG. 1, single piston reciprocating pump 100 includes piston 110 interconnected with a first end of connecting rod 120. The second end of connecting rod 120 is pivotally attached to moveable cam 130 at connection point 140. As those skilled in the art will appreciate, cam 130 is attached to a rotating shaft portion of a motor or similar engine. As those skilled in the art will further appreciate, piston 110, connecting rod 120, cam 130, and motor must be precisely manufactured to reduce vibration. [0005] Referring now to FIGS. 1 and 2, pumping is accomplished from the reciprocating motion of the piston and two valves, including intake valve 150 and output valve 160. As cam 130 rotates from a first position shown in FIG. 1 to a second position shown in FIG. 2, i.e. during the filling stroke, piston 110 moves within tubular member 105 in a first direction toward cam 130 and fluid 170 is drawn into tubular member 105 through intake valve 150. As cam 130 moves rotates through the second position of FIG. 2, intake valve 150 closes and output valve 160 opens. As cam 130 continues to rotate, piston 110 moves in a second direction away from cam 130 thereby pushing fluid 170 out of tubular member 105 and out of output valve 160 into output conduit 210. [0006] What is needed is a reciprocating pump wherein the motion source is eliminated, or combined with the fluid handling portion, such that the mechanical complexity is be reduced, with a subsequent reduction in manufacturing costs and maintenance. SUMMARY OF THE INVENTION [0007] Applicant's invention includes a reciprocating pump apparatus. The reciprocating pump comprises a tubular member comprising a midpoint, a first end, and a second end. The reciprocating pump further comprises a first electromagnet disposed around a first portion of the tubular member disposed between the midpoint and said first end, and a second electromagnet disposed around a second portion of the tubular member disposed between the midpoint and the second end of said tubular member. The reciprocating pump further comprises a first permanent magnet disposed on said tubular member between the first electromagnet and the second electromagnet [0008] The reciprocating pump further comprises a first hollow piston slidably disposed within the tubular member, wherein that first hollow piston comprises a first end comprising a first magnetic polarity, a one way value opening outwardly disposed on the first end, and a second end comprising a second magnetic polarity, wherein the first end of the first hollow piston faces the first end of the tubular member, and a second hollow piston slidably disposed within the tubular member, wherein that second hollow piston comprises a first end comprising the second magnetic polarity, a one way value opening outwardly disposed on the first end, and a second end comprising the first magnetic polarity, wherein the second end of the second hollow piston faces the second end of said tubular member. BRIEF DESCRIPTION OF THE DRAWINGS [0009] The invention will be better understood from a reading of the following detailed description taken in conjunction with the drawings in which like reference designators are used to designate like elements, and in which: [0010] FIG. 1 is a block diagram showing a prior art reciprocating pump; [0011] FIG. 2 is a block diagram showing the operation of the prior art pump of FIG. 1; [0012] FIG. 3 is an electric schematic showing circuitry used to supply current to one or more electromagnets disposed in certain embodiments of Applicant's reciprocating pump assembly; [0013] FIG. 4A shows a cross-section of one embodiment of Applicant's reciprocating pump apparatus; [0014] FIG. 4B shows a perspective view of the apparatus of FIG. 4A; [0015] FIG. 5 shows circuitry disposed in a controller used to operate certain embodiments of Applicant's reciprocating pump apparatus; [0016] FIG. 6 shows a perspective view of Applicant's hollow magnetic piston assembly; [0017] FIG. 7A illustrates one step in Applicant's method to pump a fluid using the apparatus of FIGS. 4A and 4B; [0018] FIG. 7B illustrates a second step in Applicant's method to pump a fluid using the apparatus of FIGS. 4A and 4B; [0019] FIG. 7C illustrates a third step in Applicant's method to pump a fluid using the apparatus of FIGS. 4A and 4B; Continue reading about Reciprocating pump apparatus and method using same... Full patent description for Reciprocating pump apparatus and method using same Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Reciprocating pump apparatus and method using same patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Reciprocating pump apparatus and method using same or other areas of interest. ### Previous Patent Application: Grease pump Next Patent Application: Reciprocating compressor Industry Class: Pumps ### FreshPatents.com Support Thank you for viewing the Reciprocating pump apparatus and method using same patent info. 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